   0  inline_call_r_r <JitCode 'allocate_instance__W_BytesIO'>, R[%r0] -> %r0
   6  -live- %r0
   6  inline_call_ir_v <JitCode 'W_IOBase.__init__'>, I[$False], R[%r0]
  13  -live- %r0
  13  setfield_gc_i %r0, $False, FieldDescr<pypy.module._io.interp_bytesio.W_BytesIO.inst__RStringIO__closed>
  18  setfield_gc_r %r0, $<* struct stringbuilder>, FieldDescr<pypy.module._io.interp_bytesio.W_BytesIO.inst__RStringIO__strings>
  23  setfield_gc_r %r0, $<* struct list>, FieldDescr<pypy.module._io.interp_bytesio.W_BytesIO.inst__RStringIO__bigbuffer>
  28  setfield_gc_i %r0, $-1, FieldDescr<pypy.module._io.interp_bytesio.W_BytesIO.inst__RStringIO__pos>
  33  -live- %r0
  33  goto_if_not_ptr_iszero %r0, L1
  37  ref_return $<* struct pypy.interpreter.baseobjspace.W_Root>
  39  ---
  39  L1:
  39  ref_return %r0
